Last year we were having a problem with our 3 year old hens having blood in their poop but no other signs of illness at all except two of them stopped laying completely. I finally looked in the chicken health handbook, and based on what I read I think they had coccidiosis or some other parasite. The bloody poop finally resolved on its own, and as it was the fall and they were molting, plus winter was coming, we figured we wouldn't see any eggs until the spring. So it is now March and we've been waiting but still no eggs (our other three year old hen started laying again already). I was wondering if anyone knew if the infection damaged their egg-producing ability permanently, or whether they might ever lay again? We never gave them any medication, but I do now treat their water with Bragg's Apple Cider Vinegar, probiotics, and Ropa Complete Poultry additive (we rotate these supplements). Thanks in advance for any wisdom you have to share!